How to add metadata to nodejs grpc call

Question

I\'d like to know how to add metadata to a nodejs grpc function call. I can use channel credentials when making the client with

var client = new proto.Docume         


        

Answer 1

For sake of completeness I'm going to extend on @murgatroid99 answer.

In order to attach metadata to a message on the client you can use:

var meta = new grpc.Metadata();
meta.add('key', 'value');
client.send(doc, meta, callback);

On the server side int your RPC method being called, when you want to grab your data you can use:

function(call, callback){ 
   var myVals = call.metadata.get("key"); 
   //My vals will be an array, so if you want to grab a single value:
   var myVal = myVals[0]; 
}